Suppose that the graph of y = 100 - fo represents a hill rising from level ground represented by the z-axis as shown in the figure above. Let z and y be measured in feet. A 16-foot tower, TR, stands on the top of the hill. (a) Determine the equation of TQ, the line of sight from the top of the tower tangent to the hill. Justify your answer. From the top of the tower, the ground between P and Q is blocked by the hill and cannot be seen. Find the distance between P and Q to the nearest foot.